Home / 861,941,413.55-1,292,912,137.44-206,892,439.85

Finding the Fourth Proportional to 861,941,413.55, 1,292,912,137.44 and 206,892,439.85

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Solution

The fourth proportional to 861,941,413.55, 1,292,912,137.44 and 206,892,439.85 is: 310,338,663.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,941,413.55 : 1,292,912,137.44 = 206,892,439.85 : x
  2. Step 2: Convert to fraction form
    861,941,413.55/1,292,912,137.44 = 206,892,439.85/x
  3. Step 3: Cross multiply
    861,941,413.55x = 1,292,912,137.44 × 206,892,439.85
  4. Step 4: Simplify right side
    861,941,413.55x = 267,493,746,629,872,416
  5. Step 5: Solve for x
    x = 267,493,746,629,872,416/861,941,413.55
  6. Step 6: Final answer
    x = 310,338,663.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.